期刊论文

Effect of Thickness of Gravel Cover on Infiltration Characteristics of Water Repellent Soils and Its Model Optimization

中文

水土保持学报

1009-2242

2019

33

2

17-22,29

10.13870/j.cnki.stbcxb.2019.02.003

国家自然科学基金项目(41471185) 湖南省教育厅重点项目(15A084) 湖南省重点研发计划项目(2016JC2032).

本校为第一机构

基于室内一维垂直入渗土柱试验,研究砾石覆盖厚度(0,3,6,9,12 cm)对斥水土壤积水入渗及水分再分布的影响,并利用不同入渗模型进行拟合。结果表明:砾石覆盖显著增加斥水土壤湿润锋运移距离(p 再分布3天>再分布7天;Horton模型对砾石覆盖斥水土壤入渗过程的拟合效果最好,是分析和预测砾石覆盖斥水土壤水分入渗特征的适宜模型。

Based on one-dimensional vertical infiltration experiments,we studied the effects of thickness of gravel (0,3,6,9,12 cm) on water infiltration and redistribution in water repellent soils with constant bulk density,and the infiltration process were simulated using different models.The results showed that the migration distance of the wetting fronts were increased significantly (p redistributed for 3 days >redistributed for 7 days.Horton infiltration model had the best fitting effect on water repellent soil infiltration under gravel cover,which made it suitable to analyze and predict the infiltr...